ROTATING APPARATUS FOR A TOOL PART OF A SHAPING MACHINE

Abstract

A rotating apparatus includes a rotary plate for mounting a tool part, a rotary shaft connected to the rotary plate, a rotary feedthrough including a stator, and a rotor connected to the rotary shaft for feeding through at least two media to the rotary plate. The rotor has a first rotor part for feeding through a first medium and a second rotor part for feeding through a second medium, and the first and the second rotor parts are thermally separated from each other. A first media routing for the first medium is in the form of a hose and/or pipe for the first medium from the first rotor part past the connecting part to the rotary plate. A connecting part is non-rotatably connected to the second rotor part and the rotary shaft. The hose and/or pipe extends from the first rotor part.

Claims

1. A rotating apparatus for a tool part of a shaping machine comprising: a rotary plate for mounting a tool part, a rotary shaft connected to the rotary plate, a rotary feedthrough comprising a stator and a rotor connected to the rotary shaft for feeding through at least two media to the rotary plate, wherein the rotor has a first rotor part for passing through at least one first medium of the at least two media and a second rotor part for feeding through at least one second medium, preferably different from the at least first medium, of the at least two media, wherein the first and the second rotor parts are thermally separated from each other, a first media routing from the rotor to at least one connection at the rotary plate for the at least one first medium, and a connecting part which is non-rotatably connected to the second rotor part and the rotary shaft and in which at least one part of a second media routing for the at least one second medium is provided, wherein the connecting part is in the form of a body having a peripheral surface, and wherein the first media routing is in the form of at least one hose and/or pipe for the at least one first medium and extends from the first rotor part externally past the peripheral surface of the connecting part to the rotary plate.

2. The rotating apparatus as set forth in claim 1, wherein the rotary shaft is in the form of a hollow shaft.

3. The rotating apparatus as set forth in claim 2, wherein the at least one hose and/or the at least one pipe of the first media routing extends from the at least one connection at the first rotor part through the hollow shaft to the rotary plate.

4. The rotating apparatus as set forth in claim 2, wherein the second media routing leads the at least one second medium from the second rotor part by way of the at least one part of the second media routing of the connecting part and at least one passage provided in the hollow shaft to the rotary plate.

5. The rotating apparatus as set forth in claim 1, wherein the connecting part is in the form of a cylindrical body, preferably a shaft, and it is preferably provided that the at least one part of the second media routing of the connecting part as at least one passage that extends along a longitudinal axis of the connecting part and that is preferably provided in a peripheral surface of the connecting part.

6. The rotating apparatus as set forth in claim 1, wherein the connecting part has a cable guide for a second medium in the form of electrical signals and/or an electrical power supply.

7. The rotating apparatus as set forth in claim 1, wherein at least two transversely projecting wings are arranged at an end directed towards the rotary shaft of the body of the connecting part and the at least one part of the second media routing of the connecting part is connected to openings arranged at the wings.

8. The rotating apparatus as set forth in claim 7, wherein there are provided at least three and preferably at least four or six wings projecting in a star shape from the body of the connecting part.

9. The rotating apparatus as set forth in claim 1, wherein the connecting part has at least a passive cooling device, preferably bores and/or slots.

10. The rotating apparatus as set forth in claim 1, wherein the connecting part is connected to the first rotor part, preferably by way of a thermal insulating element.

11. The rotating apparatus as set forth in claim 1, wherein the rotor of the rotary feedthrough is adapted for endless rotation.

12. The rotating apparatus as set forth in claim 1, wherein the stator of the rotary feedthrough for performing a linear movement along a central axis of the rotary shaft is connected to the rotary shaft and/or the rotor of the rotary feedthrough and there is preferably provided a linear drive for performing the linear movement.

13. The rotating apparatus as set forth in claim 1, wherein the rotor of the rotary feedthrough is connected to a rotary drive for rotating the rotor, the connecting part connected thereto and the rotary shaft connected thereto, or a rotary drive is coupled directly to the rotary plate, or a rotary drive is coupled directly to the rotary shaft.

14. A closing unit for a shaping machine comprising the rotating apparatus as set forth in claim 1.

15. The closing unit as set forth in claim 14, wherein the rotating apparatus has a vertical axis of rotation and is arranged between two mold mounting plates which are moveable relative to each other or a mold mounting plate and a rotary cube of the closing unit.

16. The closing unit as set forth in claim 14, wherein the rotating apparatus has a horizontal axis of rotation and is mounted to a mold mounting plate or a rotary cube of the closing unit.

17. A shaping machine, in particular an injection molding machine, comprising the closing unit as set forth in claim 14.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Advantageous embodiments of the invention are discussed with reference to the Figures. Although all Figures show the configuration of a rotating apparatus with a horizontal axis of rotation, the invention is equally suitable for use with a vertical axis of rotation. In the drawings:

[0056] FIG. 1 is a first diagrammatic view of the basic structure of a rotating apparatus according to the invention, in which the rotor of the rotary feedthrough is adapted for endless rotation,

[0057] FIG. 2 shows the rotating apparatus of FIG. 1 with illustrated media routings,

[0058] FIG. 3 shows a detail of FIG. 2,

[0059] FIGS. 4a-c show various embodiments of a connecting part of a rotating apparatus according to the invention,

[0060] FIGS. 5a, b show further various embodiments of a connecting part of a rotating apparatus according to the invention,

[0061] FIG. 6 is a plan view of a mold mounting plate with rotating apparatus, and

[0062] FIG. 7 shows a further embodiment of a rotating apparatus according to the invention with a vertical axis of rotation.

DETAILED DESCRIPTION OF THE INVENTION

[0063] FIG. 1 shows a rotating apparatus 1 for a tool part of a shaping machine comprising a rotary plate 2 for mounting a tool part (not shown) and a rotary shaft 3 connected to the rotary plate 2. The rotary shaft 3 is mounted by way of rotary bearings in a passage opening of a mold mounting plate (the mold mounting plate is here mounted moveably on a machine bed that is not shown).

[0064] A stator 4 of the rotary feedthrough (together with the connections leading to the stator 4) and a linear drive for performing a linear movement in order to lift the rotary plate 2 (which here is in the form an index plate) off the mold mounting plate 10 are not shown and correspond to the state of the art. By way of example three different options are shown in respect of positions of a rotary drive 19.

[0065] This embodiment has a rotary feedthrough for an endless rotation comprising a rotor 5 connected to the rotary shaft 3 for feeding through at least two different media to the rotary plate 2, wherein the rotor 5 has a first rotor part 51 for feeding through at least one first medium (temperature-control medium) of the at least two different media and a second rotor part 52 for feeding through at least one second medium, different from the first medium, of the at least two different media. The first and the second rotor parts 51, 52 are thermally separated from each other in known fashion.

[0066] There is a connecting part 6 which is connected non-rotatably to the second rotor part 52 and the rotary shaft 3 and in which at least one part of the second media routing for the at least one second medium is provided.

[0067] The first media routing for the at least one first medium is not shown in FIG. 1 (but see FIG. 2). In regard to the second media routing, it is possible to see a cable guide 9, passages 8 for second medium in the form of hydraulic oil in the connecting part 6 and the rotary shaft 3 are not shown here but can be seen in FIG. 2.

[0068] FIG. 2 shows the rotating apparatus 1 of FIG. 1, wherein there can be seen additionally that the first media routing extends between the first rotor part 51 and connections at the rotary plate 2 in the form of hoses 7 (alternatively pipes would be possible portion-wise or over the entire length). The hoses 7 extend externally past the body 62 of the connecting part 6 by which thermal separation is ensured in that region and they enter by way of openings (not shown) into the rotary shaft 3 which, in this case, is in the form of a hollow shaft. They extend within a hollow space in the rotary shaft 3 to the connections at the rotary plate 2 which are arranged in connecting blocks 18, wherein thermal separation is also afforded in the region of the rotary shaft 3 by the spatial distance of the passages 8 and the cable guide 9. Optional fans 16 for active cooling are shown.

[0069] FIG. 3 shows a detail in relation to FIG. 2, in which the stator 4 of the rotary feedthrough is illustrated. A second medium in the form of hydraulic oil is passed by way of passages 8 through the connecting part 6 with the passages 8 being connected with oil-carrying passages 8 in the second rotor part 52 and oil-carrying passages 8 in the casing of the rotary shaft 3. For sealing oil seals 17 are provided. The connecting part 6 has a central cable guide 9 for power lines (these are not shown), that aligns with cable guides 9 in the second rotor part 52 and rotary shaft 3. FIG. 3 shows a thermal insulating element 13 which thermally separates the first rotor part 51 and the connecting part 6. Thermal separation of the first rotor part 51 from the second rotor part 52 is afforded by an air gap between the first rotor part 51 and the second rotor part 52. The connecting part 6 is non-rotatably connected to the first rotor part 51 and the second rotor part 52.

[0070] FIGS. 4a-c show various embodiments of the connecting part 6, wherein all embodiments (apart from optional apertures 12) have the same cross-section as shown in FIG. 4a and differ from each other only in the number of transversely projecting wings 61 arranged in a star shape. Arranged at the wings are two respective openings communicating with the passages 8 of the second media routing. In some of the illustrated embodiments the wings 61 have apertures 12, through which the lines of the first media routing can extend (not shown). Preferably the lines of the first media routing extend between the wings 61 (not shown).

[0071] In the embodiment of FIGS. 5a and 5b (here shown only in the variant with four wings 61), the connecting part 6 has a passive cooling device 11 in the form of openings.

[0072] FIG. 6 shows a plan view of the mold mounting plate 10 and the rotary plate 2, wherein it can be seen that in this embodiment common connecting blocks 18 are provided for the media routing, by way of which the connection to a tool part or other components arranged in the region of the rotary plate 2 can be effected. Alternatively, the connections of the first and second media routing can be arranged separately from each other.

[0073] In the embodiment in FIG. 7, the rotating apparatus 1 has a vertical axis of rotation. Optional fans 16 are provided and alternative positioning options for the rotary drive 15 are shown.

LIST OF REFERENCES

[0074] 1 rotating apparatus for a tool part of a shaping machine [0075] 2 rotary plate [0076] 3 rotary shaft for rotary plate [0077] 4 stator [0078] 5 rotor of a rotary feedthrough [0079] 51 first rotor part [0080] 52 second rotor part [0081] 6 connecting part [0082] 61 wing of the connecting part [0083] 62 body of the connecting part [0084] 7 hose [0085] 8 passage [0086] 9 cable guide [0087] 10 mold mounting plate [0088] 11 passive cooling device [0089] 12 aperture [0090] 13 insulating element [0091] 14 hydraulic pipe [0092] 15 rotary drive [0093] 16 fan [0094] 17 oil seal (for example O-ring) [0095] 18 connecting block